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- NNNNeeeetttt::::::::pppprrrroooottttooooeeeennnntttt((((3333)))) NNNNeeeetttt::::::::pppprrrroooottttooooeeeennnntttt((((3333))))
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- NNNNAAAAMMMMEEEE
- Net::protoent - by-name interface to Perl's built-in getproto*()
- functions
-
- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- use Net::protoent;
- $p = getprotobyname(shift || 'tcp') || die "no proto";
- printf "proto for %s is %d, aliases are %s\n",
- $p->name, $p->proto, "@{$p->aliases}";
-
- use Net::protoent qw(:FIELDS);
- getprotobyname(shift || 'tcp') || die "no proto";
- print "proto for $p_name is $p_proto, aliases are @p_aliases\n";
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-
- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- This module's default exports override the core _g_e_t_p_r_o_t_o_e_n_t(),
- _g_e_t_p_r_o_t_o_b_y_n_a_m_e(), and _g_e_t_n_e_t_b_y_p_o_r_t() functions, replacing them with
- versions that return "Net::protoent" objects. They take default second
- arguments of "tcp". This object has methods that return the similarly
- named structure field name from the C's protoent structure from _n_e_t_d_b._h;
- namely name, aliases, and proto. The aliases method returns an array
- reference, the rest scalars.
-
- You may also import all the structure fields directly into your namespace
- as regular variables using the :FIELDS import tag. (Note that this still
- overrides your core functions.) Access these fields as variables named
- with a preceding p_. Thus, $proto_obj->_n_a_m_e() corresponds to $p_name if
- you import the fields. Array references are available as regular array
- variables, so for example @{ $proto_obj->_a_l_i_a_s_e_s() } would be simply
- @p_aliases.
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- The _g_e_t_p_r_o_t_o() function is a simple front-end that forwards a numeric
- argument to _g_e_t_p_r_o_t_o_b_y_p_o_r_t(), and the rest to _g_e_t_p_r_o_t_o_b_y_n_a_m_e().
-
- To access this functionality without the core overrides, pass the use an
- empty import list, and then access function functions with their full
- qualified names. On the other hand, the built-ins are still available
- via the CORE:: pseudo-package.
-
- NNNNOOOOTTTTEEEE
- While this class is currently implemented using the Class::Struct module
- to build a struct-like class, you shouldn't rely upon this.
-
- AAAAUUUUTTTTHHHHOOOORRRR
- Tom Christiansen
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- PPPPaaaaggggeeee 1111
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- NNNNeeeetttt::::::::pppprrrroooottttooooeeeennnntttt((((3333)))) NNNNeeeetttt::::::::pppprrrroooottttooooeeeennnntttt((((3333))))
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